From e978eca3635f4a92139e3c7c47a6b28586062cc0 Mon Sep 17 00:00:00 2001
From: Joshua Harlow <harlowja@yahoo-inc.com>
Date: Fri, 12 Sep 2014 18:49:29 -0700
Subject: [PATCH] Allow stopwatches to be restarted

It is quite useful to allow a stopwatch to be reset
or restarted in a single operation, instead of having
to handle this logic outside of the stopwatch object,
which is error-prone and unnecessary to require users
to reinvent.

Part of blueprint process-executor

Change-Id: Ie0304a4f1d5f6bf0460e9a134762d1403da56375
---
 taskflow/types/timing.py | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/taskflow/types/timing.py b/taskflow/types/timing.py
index decada4a..ab9a4c48 100644
--- a/taskflow/types/timing.py
+++ b/taskflow/types/timing.py
@@ -73,6 +73,12 @@ class StopWatch(object):
         self._state = self._STARTED
         return self
 
+    def restart(self):
+        if self._state == self._STARTED:
+            self.stop()
+        self.start()
+        return self
+
     def elapsed(self):
         if self._state == self._STOPPED:
             return max(0.0, float(timeutils.delta_seconds(self._started_at,